MO SB509

Allows governing bodies of cities not within a county (specifically St. Louis City) to designate blighted areas after holding a public hearing with at least 30 days' notice to affected political subdivisions.

Blighted area designations expire after 25 years from adoption.

Improvements made to real property in designated blighted areas after designation can be exempted, in whole or in part, from ad valorem taxes by authorizing resolution, but exemptions cannot exceed 25 years.

Requires a second public hearing with certified mail notice to political subdivisions before granting any tax exemption, with notice published 20-30 days prior to hearing.

Authorizing resolutions must specify the exemption percentage, duration, affected political subdivisions, and any other terms or conditions, with copies provided to affected subdivisions within 30 calendar days.